There's a lot to do on a farm, yet no farmer is expected to be working a full 8 hours a day, 40 hours a week, at moderate intensity. No farmer has to do something within the next hour or their boss shouts at them. No farmer has to feel bad, or need to catch up, if they have to take a day off unless it's planting season. No farmer has any qualm about ending a day early because they've done all they planned to do. No farmer obsesses with stimulant medication or correct dosage of modafinil to get through their daily work.

And there's a huge difference between a subsistence farmer, which most of humanity has been for most of history, and intensive farming, which admittedly benefits from machines, but it's anyway a much more regimented industrial operation.